from django.test import TestCase from django.core.exceptions import ValidationError from .models import Part, PartCategory, PartParameter, PartParameterTemplate class CategoryTest(TestCase): """ Tests to ensure that the relational category tree functions correctly. Loads the following test fixtures: - category.yaml """ fixtures = [ 'category', 'part', 'location', 'params', ] def setUp(self): # Extract some interesting categories for time-saving self.electronics = PartCategory.objects.get(name='Electronics') self.mechanical = PartCategory.objects.get(name='Mechanical') self.resistors = PartCategory.objects.get(name='Resistors') self.capacitors = PartCategory.objects.get(name='Capacitors') self.fasteners = PartCategory.objects.get(name='Fasteners') self.ic = PartCategory.objects.get(name='IC') self.transceivers = PartCategory.objects.get(name='Transceivers') def test_parents(self): """ Test that the parent fields are properly set, based on the test fixtures """ self.assertEqual(self.resistors.parent, self.electronics) self.assertEqual(self.capacitors.parent, self.electronics) self.assertEqual(self.electronics.parent, None) self.assertEqual(self.fasteners.parent, self.mechanical) def test_children_count(self): """ Test that categories have the correct number of children """ self.assertTrue(self.electronics.has_children) self.assertTrue(self.mechanical.has_children) self.assertEqual(len(self.electronics.children.all()), 3) self.assertEqual(len(self.mechanical.children.all()), 1) def test_unique_childs(self): """ Test the 'unique_children' functionality """ childs = [item.pk for item in self.electronics.getUniqueChildren()] self.assertIn(self.transceivers.id, childs) self.assertIn(self.ic.id, childs) self.assertNotIn(self.fasteners.id, childs) def test_unique_parents(self): """ Test the 'unique_parents' functionality """ parents = [item.pk for item in self.transceivers.getUniqueParents()] self.assertIn(self.electronics.id, parents) self.assertIn(self.ic.id, parents) self.assertNotIn(self.fasteners.id, parents) def test_path_string(self): """ Test that the category path string works correctly """ self.assertEqual(str(self.resistors), 'Electronics/Resistors - Resistors') self.assertEqual(str(self.transceivers.pathstring), 'Electronics/IC/Transceivers') def test_url(self): """ Test that the PartCategory URL works """ self.assertEqual(self.capacitors.get_absolute_url(), '/part/category/3/') def test_part_count(self): """ Test that the Category part count works """ self.assertTrue(self.resistors.has_parts) self.assertTrue(self.fasteners.has_parts) self.assertFalse(self.transceivers.has_parts) self.assertEqual(self.fasteners.partcount(), 2) self.assertEqual(self.capacitors.partcount(), 1) self.assertEqual(self.electronics.partcount(), 3) self.assertEqual(self.mechanical.partcount(), 9) self.assertEqual(self.mechanical.partcount(active=True), 8) self.assertEqual(self.mechanical.partcount(False), 7) self.assertEqual(self.electronics.item_count, self.electronics.partcount()) def test_parameters(self): """ Test that the Category parameters are correctly fetched """ # Check number of SQL queries to iterate other parameters with self.assertNumQueries(7): # Prefetch: 3 queries (parts, parameters and parameters_template) fasteners = self.fasteners.prefetch_parts_parameters() # Iterate through all parts and parameters for fastener in fasteners: self.assertIsInstance(fastener, Part) for parameter in fastener.parameters.all(): self.assertIsInstance(parameter, PartParameter) self.assertIsInstance(parameter.template, PartParameterTemplate) # Test number of unique parameters self.assertEqual(len(self.fasteners.get_unique_parameters(prefetch=fasteners)), 1) # Test number of parameters found for each part parts_parameters = self.fasteners.get_parts_parameters(prefetch=fasteners) part_infos = ['pk', 'name', 'description'] for part_parameter in parts_parameters: # Remove part informations for item in part_infos: part_parameter.pop(item) self.assertEqual(len(part_parameter), 1) def test_invalid_name(self): # Test that an illegal character is prohibited in a category name cat = PartCategory(name='test/with/illegal/chars', description='Test category', parent=None) with self.assertRaises(ValidationError) as err: cat.full_clean() cat.save() # pragma: no cover self.assertIn('Illegal character in name', str(err.exception.error_dict.get('name'))) cat.name = 'good name' cat.save() def test_delete(self): """ Test that category deletion moves the children properly """ # Delete the 'IC' category and 'Transceiver' should move to be under 'Electronics' self.assertEqual(self.transceivers.parent, self.ic) self.assertEqual(self.ic.parent, self.electronics) self.ic.delete() # Get the data again transceivers = PartCategory.objects.get(name='Transceivers') self.assertEqual(transceivers.parent, self.electronics) # Now delete the 'fasteners' category - the parts should move to 'mechanical' self.fasteners.delete() fasteners = Part.objects.filter(description__contains='screw') for f in fasteners: self.assertEqual(f.category, self.mechanical) def test_default_locations(self): """ Test traversal for default locations """ self.assertEqual(str(self.fasteners.default_location), 'Office/Drawer_1 - In my desk') # Any part under electronics should default to 'Home' r1 = Part.objects.get(name='R_2K2_0805') self.assertIsNone(r1.default_location) self.assertEqual(r1.get_default_location().name, 'Home') # But one part has a default_location set r2 = Part.objects.get(name='R_4K7_0603') self.assertEqual(r2.get_default_location().name, 'Bathroom') # And one part should have no default location at all w = Part.objects.get(name='Widget') self.assertIsNone(w.get_default_location())